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发明名称
CATHODE STRUCTURE FOR AN ELECTRON TUBE
摘要
申请公布号
US4143295(A)
申请公布日期
1979.03.06
申请号
US19770821338
申请日期
1977.08.03
申请人
HITACHI, LTD.
发明人
OGURO, TOMOKATSU
分类号
H01J1/14;H01J1/15;H01J1/22;H01J23/05;(IPC1-7):H01J1/14;H01J19/06;H01K1/04
主分类号
H01J1/14
代理机构
代理人
主权项
地址
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